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Chapter 9 Lesson 1
People and the Environment
| Question | Answer |
|---|---|
| Mining can have a (positive/negative) impact on habitats when it pollutes soil and water. | negative |
| The (greatest/smallest) increase in human population happened in the last few centuries, | greatest |
| Earth has a(n) (limited/unlimited) amount of resources. | limited |
| The human population is about 6.7 (million/billion). | billion |
| Carry capacity is the (largest/smallest) number of individuals of a given species that Earth's resources can support. | largest |
| Effects of improved health care------> | increased population, longer lifespans, more reproduction |
| What is a population? | All the members of a species living in a given area |
| What is a population explosion? | The sudden rise in human population that has happened in recent history |
| What reasons might have led to the population explosion? | Improved healthcare, clean water, technological advancements |
| How many people live on Earth today? | 6.7 - 7.4 billion |
| How does the carrying capacity relate to resource use? | The carrying capacity depends on the amount of available resources |
| What might happen to the amount of resources on Earth if humans exceed their carrying capacity? | The amount of resources will begin to decrease, so will the population. |
| The population of a town is the number of _____ who live there. | people |
| When scientists use the term ________, they mean all the members of a species living in a given area. | population |
| Some things that have caused this rapid population growth include improved ________ and clean ______. | healthcare and water |
| These and other technological advancements have allowed more people to live ________ and to _________. | longer and reproduce |
| People need certain things, such as ________ , clean ______, and shelter, to survive. | food and water |
| How people use resources affects the __________. | environment |
| Most towels are made of _______, which comes from a plant. | cotton |
| Growing plants often involves the use of ___________ and other chemicals that pollute the environment. | fertilizers |
| Fossil fuels are ___________ resources because they are used up faster than they can be replaced by natural processes. | nonrenewable |
| Burning __________ releases pollution into the atmosphere. | fossil fuels |
| The greatest ________ in human population occurred in the last few centuries. | increase |
| What will happen if a species exceeds its carrying capacity? | The amount of resource will decrease, which will cause the population to decrease. |
| What is carrying capacity? | The largest number of individuals of a given species that Earth's resources can support and maintain for a long period of time. |
Created by:
megenkel2162
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